Severe Memory Leak in Ubuntu

[Mervis_Pervis]

Hardware: Dell XPS 15 7590
OS: Ubuntu 20.04.2 LTS
Processor: Intel Core i7-9750H
Graphics: NVIDIA TU117M GeForce
64-Bit
16 GB RAM

Shotcut Verion 21.05.18 installed using Snap
Display Method: OpenGL
360p Preview Scaling

When I begin working on a project, RAM incrementally builds to 100% RAM usage over the span of ~20 mins, forcing me to save/close the project and restart. It doesn’t matter what source files I’m using, the outcome is always the same.

When I open an MLT file (any MLT file), RAM usage immediatley jumps from 2.8GB to 8GB. I can only work on a project for a short amount of time before RAM reaches 100% and I’m forced to save/close the project and restart.

When exporting any file, the RAM reaches 100% and the app crashes before it can be completed. (the process that quickly reaches 100% RAM usage is /snap/shotcut/347/Shotcut.app/bin/melt-7 -verbose -progress2 -abort xml:%2Ftmp%2Fshotcut-zgjluw.mlt)

I have been using Shotcut for almost 4 years now and while I’ve had issues mostly related to the UI, I have only been seeing this memory usage problem for the last few weeks. It started as an inconvenience but has reached a level where I cannot create projects at all.

When I attempt to revert back to a previous version of Shotcut using snap, I receive a message stating there is not a version to revert to. And whether I’m using my dedicated graphics card to run Shotcut or not, the problem persists.

[ejmillan]

can it be a problem similar to the one described here?

Possible Memory Leak When Rendering?

It may be something to do with the clips I’m using, but I honestly don’t know. Because I don’t think that it’s normal that it’d use almost triple the memory that it would take to load all the clips into memory at one moment. It could also have something to do with the export settings I’m using (see the .XML file, which can be given as a parameter to melt.exe on the command line)

@Mervis_Pervis

When I attempt to revert back to a previous version of Shotcut using snap, I receive a message stating there is not a version to revert to

You can use an older AppImage version
Releases · mltframework/shotcut · GitHub

[HDSQ.mid]

It doesn’t seem to be exactly the same as my issue, since I wasn’t having any issues with the editor’s memory usage, but the rendering problem definitely looks the same.